Control of pattern means in knitting machines



Nov.' 12, 1963 T. c. LYSTER 3,110,168

CONTROL OF PATTERN MEANS IN KNITTING MACHINES A TTORNEY T. c. LYsTER 3,110,168

CONTROL oF PATTERN MEANS TN KNTTTTNG MACHINES Nov. 12, 1963 4 Sheets-Sheet 2 Filed Sept. 28, 1960 IN VEN TOR. THOMAS GILYSTER.

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A TTORNE Y Nov. 12, 1963 T. c.1.YsTER 3,110,168

CONTROL OF PATTERN MEANS IN KNITTING MACHINES Filed sept. 28, 1960 4 sheetssheet s CAM SPAclNe Q9 o 2 Q 1N VENTOR. Tl-loMAs C. LYSTER.

A TTORNE Y Nov. 12, 1963 T. c. LYSTER 3,110,168

CONTROL OF PATTERN MEANS IN KNITTING MACHNES 4 Sheets-#Sheet 4 Filed Sept. l28, 1960 :l ll/ INVENTOR. THOMAS C. LYSTER.

Wfl-7 I j? Zf A TTORNE Y United States Patent O arteries coNrnor. or ra'r'rnnu ann-iris ne rmrr'rnso MAenrNns This invention pertains -to circular, independent needle knitting machines and more particularly to mechanism applicable to Jacquard type pattern means of a particular type rwhich mechanism -is `especially adapted for starting and stopping such pattern means while maintaining it in properly timed relationship to other parts of the machine.

IIt is a general object of the invention to devise means for controlling the starting and stopping of Jacquard type patterns in knitting machines of the type described wherein, while a pattern is being knitted, the pattern means is continuously in motion.

A more specific object is that of so controlling the pattern that it may be properly started and stopped in knitting continuous lengths of material wherein the pattern is formed .in zones lengthwise of the fabric and is not formed in lengths of the material between these zones.

A further object is that or" controlling the stopping and starting of several dilerent pattern units about the machine in such manner as to bring them into and take them out of action in sequence so as to begLn and end the pattern with uniformity.

It is a further object so to control these elements that cams which aiect patterning members shall always move from and to active position in a sate, timed relationship so that the pattern may be started and stopped as planned and also, parts engaged without interference or danger' of improperly timed action.

Other objects will become apparent from the following more detailed disclosure.

In machines of the Circular Jacquard type manufactured by Wildman Jacquard Co. of Norristown, Pennsylvania,'it has for some time been customary to advance the pattern strips and attendant means intermittently, for example, by a Geneva motion as shown in Urn'ted States Patent No. 2,281,721. More recently a -way has been found to utilize such pattern means in a practical manner while advancing it continuously at a uniform rate, see United States Patent No. 2,814,937. Of course, as long as the pattern is caused to function continuously with the knitting there is no problem of starting and stopping nor of timing these pattern elements to coordinate their action with the remainder of the knitting cycle.

In the knitting ot sweater blanks or other goods in which there is a change from one type of fabric to another or for any other reason, the pattern is to be discontinued at intervals during the knitting cycle. it then becomes necessary to stop the pattern and to start it again at the appropriate time. All this must be done so as to begin uniformly and to end the pattern uniformly, also to accomplish that without improper interference between the various functioning parts.

11n carrying the invention into practice various controls are so devised to work from the primary controller unit and these trip the individual pattern units into Patented Non. l2, i963 lee action during a revolution of the machine. When the pattern is to be discontinued, the same parts act through a further extent to trip the patterns out in succession and just before a cam arrives at a point to atleet the last selected elements.

yThese element alecting cams dier from those previously used in that they are constituted as two parts, separately operable and can be so timed as to go into and be `witl'idrawn from operative position in less space or angular movement of the cams about the machine.

The invention will be described in detail by reference to a preferred embodiment of the same as illustrated in the accompanying gures of drawing, wherein:

FIG. l is a sectional view taken radially through a part of a knitting machine to which the invention has been applied.

FiG. 2 is a plan view of a portion of the mechanism of HG. l.

FIG. 3 is a plan view of the pattern means and certain other parts of its controlling means.

FlG. 4 is a view showing details of the mechanism oi FlG. 3 to an enlarged scale.

FIG. 5 is a section taken at line 5 5, fFlG. 2.

PEG. 6 is a detail view of the selector lever actuating cams.

IFIG. 7 is a `section taken at line 7 7, FIG. 4.

FIG. 8 is a detail of means for eecting adjustment of one of the pattern drums.

Now referring to FIGS. l, 2 and 3, the invention has been illustrated as applied to an independent needle knitting machine of multiteed type, more spec'iically to a Circular Iacquard machine such as has been described and illustrated in United States Patent No. 2,082,127 and as improved in Patent No. 2,281,721. The pattern means is preferably applied to needles directly or through jacks atecting the needles, but may equally well apply to other knitting instriunentalities While shown here as applying to jacks and needles in a cylinder of a knitting machine, that cylinder may be one of two co-axially disposed or may be the cylinder of a dial and cylinder machine.

A cylinder lt?, formed in two parts, is fixed in a base rl supported on a machine frame in any known manner and `is slotted to serve as a needle bed for needles 12 and jacks 13. The needles have butts le which are affected by appropriate cams such as cams d5 and i6, fixed or movable as the case may be, to a cam section 17 and ring l-S. The latter is rotatable in a bearing plate or ring l held on supports extending from base ,ll in the usual way. Ring l has teeth 2li cut in its outer periphery by which it is driven. Thus the invention is herein described as applied to a machine having a iixed needle cylinder and movable cam cylinder, but it is to be understood that it applies to other types of machine and except as specifically limited in claims it is not to be restricted to a particular machine presented by Way of ill-ustration of one preferred form the invention may take.

Jacks `l are held in their slots by the usual springs and are -ared to extra vdepth at their lower ends to present an adequate bearing for the ends of lifter levers 21 pivoted at rod 2,2 held in block l.3 by cap 24. Each jack has `a butt 25 engageable by certain jack cams 26 and 27 held in place by a bracket 2S depending from ring 1?.

salones While the pattern means which functions to rock lifter levers 2l is generally of the form shown in United States Patent No. 2,814,937, it will be described here brieily. As in FIGS. 1 and 3, a bracket arm 29 extending outwardly from a mounting plate Sil supports a shaft 3l on which are mounted for rotation pattern drums 32. rhese drums have grooves 33 which are helically disposed and are continuously rotated `during that part of `a cycle of knitting during which a pattern Iis to be formed. The rotation is imparted by certain gearing and 4clutch means the basic part of which comprises a series of shafts 34 about the machine base and which `are :rotated in synchronism and at a proper speed by gearing intermeshed with the ring gear teeth .Ztl or any other suitably rotating part of the machine. A pinion 35 xed to shaft 34 drives a gear 36, FlGS. 3, 4 and 7 also, which is rotatable upon a clutch shaft 37 extending from bracket 2h to a smaller end bracket 38.

A gear 39 is keyed to shaft 37 and drives drum 32 through gear `llt) which is free to turn on the shaft but rotates the drum through a sleeve di, also rotatable on the shaft but connected by dogs to the gear hub and to a similar hub of a disk 42. ri`he latter is'held on [the shaft by a washer 43 and screw de. Between the washer and disk a plate 45 has riveted to it a pin i6 which extends through `a hole in the plate as shown. The adjacent end of the drum has a series of holes equa-l to the number of slots or grooves 33 in the drum or some other convient number, while the disk l2 has one more hole than the number of holes in the drum end. T e arrangement is shown in FIG. 8 and by changing the location of pin 46, the ldrum may be stepped ahead or backwardly through fractions of the space between grooves 33 to vary the timing.

Again referring to FIGS. 3, 4 and '7, shaft 37 is stopped or rotated according to the position of a dog clutch generally indicated by numberal 47. This clutch is comprised as a hub grooved at 48 and having at either end dog receiving notches 49 and 59. The hub of the clutch is slidable along the shaft but rotates with the shaft as the two are keyed by key 5l on which the hub also slides.

The clutch is movable axially of the shaft by means of a fork 5?. engaged in groove 48, this fork being angularly bent from one end of an arm 53 of a link pivoted at 54 to a short arm 55, FIGS. l, 3, 4 and 7. This arm 55 is fixed `at `the lowei end of a `spindle 56, FIG. l, rotatable in a sleeve 57 set in bracket arm 29. The spindle also has fixed at its top end a second arm 58 by which it is oscillated to shift the clutch in a manner and by means to be described.

When in the position of FIGS. 4 and 7, a dog S9 is engaged in notch 49 and as shaft 37 is rotated, the clutch rotates and its motion is imparted to gear 39 in turn meshed with a gear lil the motion of which is imparted to the drum by means heretofore explained.

When it is desired to stop the duim the clutch is shifted in the opposite direction releasing dog 59 and thereby Vceasing to rotate the drum; also, the notch Sil is then engaged with a second dog 6i projecting from a disk 62 a hub 63 of which is set into bracket 3S. Actually, the end of shaft 37 is borne in Ithis hub. A means more or less identical with the adjust-ing means for the drums is employed to retain the dog 6l in position and also permit its adjustment.

Since the clutch and shaft 37 are positively stopped upon shifting the clutch .as described, the parts of the pattern means and pattern itself become ineective almost immediately `and in reddition, are retained against displacement until the clutch is again shifted to start the pattern at which time the pattern will be picked up by engagement of .the single dog 59 in exactly the same relationship existing when it was discontinued.

The description here has related largely to a single drum and its driuing means however, it is to be understood that each pair of drums at a supporting bracket may be considered as a unit but that the driving means includthe clutching and stopping means are duplicated for each drum.

Levers (not shown) attach to the upper and lower ends of sleeve 57 and a second shifter like that at 52 and 53 acts to control -a drum at the opposite end of shaft 31. Sleeve 57 is tumable in bracket 29 while spindle 56 turns in the sleeve.

Each drum has a sprocket portion at its ends and just as in United States Patent No. 2,814,937, van endless strip is passed over each drum and advanced by engagement of sprocket teeth with sprocket holes in :the strip. Perforations in the pattern strip align with slots in the drum so that spring pressed pins 62, FIG. l, may enter a perforation in the pattern and serve by engagement with the underlying slot in the drum to push a selector lever 63 radially inwardly. These levers are urged outwardly and into contact with the pattern strip by springs (not shown).

Levers not selected remain in the full line position, FiG. l, while a selected lever pushed in by its drum takes the dot-and-da'sh line position in which its 'inner end is in the pathway of Jacquard cams 64 and 65, FlG. 6. These cams, to be described in greater detail, engage a notched portion of the inner ends of selected levers and cam 6ft presses the lever ends downwardly while cam 65 serves to push ythem back to a non-selected position, although their springs would normally do that. As a lever 63 is thus selected and rocked about a pivot at 66 it presses on the outer end of its aligned lifter lever 21 rocking it as shown to elevate a jack. The latter may either push directly upon its needle or slider as the case may be or may move the jack to a position where its own butt 25 enters a ycam track and is then governed by cams to impart the desired iaotion to its needles, etc.

Referring particularly to FIGS. l and 6, the novel Jacquard cams will ne described. Heretofore the function performed by these has been taken care of by a single cam. lt is necessary to move these cams into and from position here while the carn used previously Was fixed. A small group of levers 2l and 63 are omitted in fall these machines so that a space for entering and Withdrawin cams is provided and a clean start and breaking ofi of the pattern may be realized. Of course, corresponding jacks and needles are also omitted and `a gap of oated yarns appears in the fabric. Here it is possible to keep this gap down to a minimum since the cam 64 moves into position first and 65 then follows.

A supporting bracket 67 attached at the under side of plate i8 provides for two slideways closed at the front, FIGS. 2 and 6, by plates 68, 69 and 79; Slide bars 71 and 72 may move vertically in these guideways and each is cut on a radius las shown to bear against a cylinder cam The cams themselves are attached to stem members 74 and 75 slotted as shown in FIG. 1, these latter being held in position oy screws passing through their slots and threaded into the slide bars. The slotsI provide for adjustment of cam height and consequently, of the height to which jacks shall be elevated oy the levers.

Each slide bar is provided adjacent its upper end with a roller or other follower 76 or 77 as the case may be, which, in turn, is aflected by a cam groove 7S in the cylinder cam 73. This latter has fixed at its upper end a star wheel 7i? having four arms and is rotatable on a shaft Sil fixed in bracket 67. As can be seen in FIGS. l and 6, this cam groove comprises an upper horizontal part and a corresponding lower pathway each of which is of extent to accommodate both followers at once; also, two inclined parts, one to raise and the other to lower a cam. Y

in action this cam is given two movements, one following closely upon the other, so that the cam 64 is I'irst moved to position, then the cam 65, whereupon both followers will then occupy a position in the lower horizontal groove or the cam, FIG. 6. When retracted, two similar 90 moves elevate the cams one after the other 5 as the followers are raised to the top horizontal groove of the cam.

In starting the pattern let it be assumed that the machine is in operation and knitting although not forming a pattern under control of the Jacquard means so that all clutches are disengaged and all Jacquard cams in raised position. It is now desired to pattern and in effect, beginning with one drum or selecting section (corresponding in angular extent to the angular spacing between yarn feeds) each drum is to be thrown into action and immediately thereafter cams 64 and 65 moved to active position. The latter move into the space where there are no levers and at a time when the drums will have set up the proper selecting wave.

To accomplish that a primary control is taken from the main controller unit such as that of United States Patent No. 2,861.443. A plunger 81 is moved into the full line position, FIG. 2, and its toe S2, as seen in FlG. l is in position to engage a passing star wheel 84. These latter wheels have six arms every other one of which carries a depending roller or other follower S5. Each wheel is fixed to an elongate hub part S6 pivoted upon a shoulder screw S7 threaded into cam section 17.

Star wheel 84 controls the position of a sliding trip member 88 having a toe 89 and an angularly disposed end 9i). This slide is restrained in a guiding slot 91 cut in the plate 13 and is held in place by a top or cover plate 92. It is free to slide radially as governed by a spring 93 bearing at one end against a pin 94 fixed in the plate 1S and at the other end against a shoulder in the slide. As star wheel 34 is turned one-sixth of a revolution each time it is struck by toe 82 it will lirst move to the position of PEG. 2 in which a follower S5 working against surface 9i) will force the slide into the full line position. The next contact and rotation of one-sixth turn will remove the follower from the surface 90 whereupon sping 93 will withdraw it from action.

This trip, of which one only is required, acts upon a series of spaced star wheels 95 having six arms. There is one of these star wheels for each selecting section or drum and the primary function served is that of starting and stopping the drum as will be presently described.

As seen in FIGS. l, 2, 3 and 5, each star wheel 15 is fixed to the upper end of a spindle 96 rotatable in ring 19. lt also carries a three lobed cam 97 pinned or otherwise fast on it. One unit only, that adjacent the controller has a second star wheel 98 pinned as shown. This latter wheel has its six arms oppositely directed as compared to the arms of wheel 95.

As trip toe 89 strikes an arm of a star wheel 95 it moves cam 97 one-sixth turn thereby swinging a lever 99 about its pivot 160. This lever has a pin 161, FIG. 4, which enters a notch in the free end of arm 5S; also, at its opposite end it is formed into a loop 192, FiGS. l and 2, the sides of which are engaged by the cam. As the cam moves one-sixth turn it will swing lever 99 to engage or disengage the clutch to the drum, this all depending upon the position of parts when the star wheel is struck by toe S9.

What has been explained above takes care of action necessary to start and to stop the drums or pattern means. Of course, the Jacquard cams must come into action in timed sequence with the drums and to do that each star wheel 34 must be given two 90 moves in rapid succession.

To actuate star wheels 79 a sliding trip member 1193, FIGS. l, 2 and 5, having two toes or cams 1%4- and 1&5 is' radially movable in a guideway formed between the lower surface of ring 19 and a channeled guide bracket 106. rThis latter bolts to the under face or ring 19. in FlG. 2 the ring is cut away to show parts better.

The slide varies in thickness since the toes are thinner; also, the central portion is cut out to form a cavity with two parallel and two divergent faces as shown. in this cavity a cam 197 having lobes 103 and 1&9 is fixed at the upper end of a short spindle 119 while a wedge shaped cam actuating arm 111 is fixed to the lower end of this spindle. These parts are shown in full line and dot-anddash line positions in FiG. 2, the former corresponding to active position while the latter is that of withdrawn position. When star wheel 95 for this particular sector is tripped, it sets in motion the pattern means for that part and also, by means of one of the six arms of wheel 9S swings arm 111 and cam 107 to push slide 193 inwardly until its toes 194 and lii will be in the pathway of arms of each passing star wheel 79. All cams 64 and 65 are then brought into action as they pass.

To retract slide 103 the last of the cam units to be set in action is provided with a trip cam 112 which engages the end 113 of arm 111 to shift cam 107 and with it the slide. Thus the slide stays in active position just long enough to trip all iacquard cams into action.

Toe S2 stays in for two revolutions of the machine and first trips slide 8S into action and, when all pattern means have been clutched in, a second contact withdraws the pin 35 then acting on end surface 9d so spring 94 can move the slide to inactive position.

Each of the star wheels and its associated cam are releasably locked in each of its intended positions by spring pressed balls which t into sockets as shown. These are a common expedient and need not be described further here.

Now having described the mechanism involved, a resume of one cycle from starting a pattern to stopping it will be made. Before starting all drums 32 are stopped and their clutches are, of course, disengaged from gears 36 and are locked by stop dogs 61. All cams 64 and 65 are in raised position. Sonie of the levers 63 will be pushed inwardly to varying extents since the drum slots 33 are helically disposed.

It should be borne in mind that the needle cylinder, levers 21, 63 and other pattern means as well as ring 19 and parts carried by it are stationary in the sense that they do not rotate about the central machine axis. Plate 18, cam sections, all Jacquard cams `and their supporting means and their control cams 73 to rotate past the needles, jacks and selecting means as do the other parts carried by the plate 18 and cam sections 17.

Plunger S1 is pushed in as a result of a move at the controller unit and toe 82 stands in the pathway of star wheel As the latter passes it is turned one-sixth of a revolution bringing a follower 85 against surface 'Siti and pushing slide S3 radially outwardly. its toe 8% is then in position as it orbits about the machine to strike each star wheel 95 and turn it one-sixth turn to do two things so far as #il unit goes and la single function for the remainder. As #l unit cam 97 -will swing lever `99 to shift clutch i7 correspondingly to engage dog 59 and start rotation of that particular drum and pattern.

There may be any convenient number of feeding stations and pattern sections, here it is to be `assumed there `are twenty-four of each and, of course, there is one iacquard cam unit for each feeding station.

rThis #l unit also sets trip cams 134 and 195 in position so that as the selecting sections are started these cams will immediately start to work to complete the selection whereupon the yarn feeding means and stitch cams follow in that sequence. The star Wheel 9S trips anni 111 to set the slide 193.

At this time toe S9, cams 164 and 105 continue their action to set all pattern sections land cams in active position. After the twenty-fourth section has been aifected, toe 82 hits star wheel g4 a second time and permits slide Sd to return to inactive position.

As the Jacquard cams pass the unit just following the controller, star wheel 75 is tripped twice in succession by cams 16a, 165, this occurring as before stated, just as the cams 64 and 65 pass through .the empty space at which levers 'are left out. First cam 64 moves down and then earn 65 follows. The space required to shift these cams is thus about one-half what it would otherwise be.

VAs governed by the main controller unit,

When the #24 cam unit passes and is set it immediately trips cams itil land ll out of action as lug lili acts on lever end 113 to move the parts back to inactive position. Y

As long as fthe parts are in position as above described the machine will knit whatever pattern has been set up on the pattern strips and by a sinilar action patterning may be discontinued. The controller unit again toe 32 in the path of star wheel Se setting toe in position.

Each pattern drum is stopped, one after another and by action on the star wheels 79 cams 641 and 65 are withdrawn in succession. These are likewise withdrawn at the blank space in the levers since in this type of continuously rotating lacquard means levers may he in both intermediate and extreme positions as a dnnm is stopped.

As can now be seen, the stopping and starting of a pattern is accomplished in fan orderly and effective manner so that each pattern area may be begun and ended wnn all sections uniformly knitted. There is no mechanical interference Vand the circumferential extent of fab-ric omitted in which to eifect changes is kept at a minimum. the pattern may be started and stopped any desired number of times within a knitted article.

While one embodiment of the invention has been disclosed, it is to be understood that the inventive concept may be carried out in a number of ways. This invention is, therefore, not to -be limited to the precise details described, but is intended to embrace all variations and modications thereof falling within the spirit of the invention and the scope of the claims.

I claim:

l. ln a multifeed, independent needle knitting machine having needles, means to select needles for governing their knitting function which comprises a drum, helically formed indentations extending lengthwise of said dru n, means eiiective to rotate said drum continuously during pattern knitting, a pattern member in 'the form of a strip passed over and `advanced by said drum, surface deformations in said strip, means for sensing the presence of said deformations movable by said drum to etfect a primary selecting movement, cam-like means means primarily selected to impart to them a needle displacing movement, means for starting said drum and pattern into motion and further ellective to move said cam-like means into active position prior to its moving into engagement with the said means movable by the drum to eieet a primary selecting movement.

Q. ln a multifeed, independent needle knitting machine having needles, means to select needles for governing their knitting function which comprises a drum, helically formed indentations extending lengthwise of said drum, means effective to rotate said drum continuously during pattern knitting, a pattern member in the form of `a strip passed over and advanced by said drum, surface deformations in said strip, means for sensing the presence .of said deformations movable by said drum `to eiect .a primary selecting movement, cam-like means for engaging said means primarily selected to impart toY them `a needle displacing movement, trip means and a member engaged thereby for setting in motion said drum and pattern and other means effective in closely following sequence to move said cam-like means into active position.

3. rIn a multifeed, independent needle knitting machine having needles, means to select needles for governing their knitting function which comprises spaced drums, helically formed indentations extending lengthwise of each of said drums, means eifective to rotate each of said drums continuously during pattern knitting, a pattern member in the form of a strip passed over and advanced by each of said drums, surface deformations in said strip, means for sensing the presence of said deformations movable by each of said drums to effect a primary selecting movement, `camlike means for engaging said means primarily selected interposes Cil for engaging said iones to impart to them a needle displacing movement, a trip means and a member engaged thereby for setting a second trip means and other means individual to each pattern drum and engageable sequentially by said second trip means.

4. in a mnltifeed, independent needle knitting machine having needles, means to select needles for governing their knitting function which comprises spaced drums, means for rotating said drums continuously during patterning, a clutch interposed in the driving means for each said drum, a pattern lmember in the form of a strip passed over and advanced `by each drum, surface deformations in said strips, means 4for sensing the presence of said deformations movable lby the particular drum to which that means is applied to effect a primary selecting movement and means functioning on each clutch for actuating it to start and to stop its drum and pattern which comprises a star wheel, a cam and lcam actuated shifter, a trip means movable relatively to said star wheels to change their position and that or" the cams associated therewith and means periodically controllable for setting said trip means in active position and for withdrawing it.

5. Mechanism as defined in claim 4 wherein said periodically controllable means comprises a slide and tripping means movable relatively to said star wheels, a star wheel for positioning said slide and a relatively Xed vtripping member to engage the second mentioned star wheel.

6. Mechanism as defined in claim 4 wherein said yclutch comprises a hub member movable to two positions, dog means, one at each end of Lsaid hub member, a gear and means thereon for engagement by one said dog means and a stop member having complementary means thereon for receiving the other dog member when the clutch is disengaged.

7. Mechanism as defined in claim 4 wherein means is provided for actuating those sensing means which are selected, said means comprising cams movable past the sensing means for displacing them and a cam `shifting means to move each cam unit into active position in sequenoe following the clutching into action of the drum first set in motion.

8. Mechanism as defined in claim 7 wherein said cam means for displacing the sensing means are adjustably supported upon a sliding member and a rotatable cam means is provided for moving the cam means and its support.

9. Mechanism as defined in `claim 7 wherein said cam means is comprised as two separate cams, a sliding support for each and means for moving the cams to and from active position in sequence.

l0. Mechanism as deiined in claim 7 wherein said cam means is controlled to move to and from active position by means including a cam and means for rotating said `cant which comprises a star wheel and a tripping means the latter of which is positioned coincidentally with the starting into action of a lirst pattern means. Y

ll. ln a mulifeed, independent needle knitting machine having needles, means to select needles for governing their knitting function which comprise pattern means including spaced pattern drums and pattern sensing means associated with each drum elective for displacing needles in a selecting motion, means for advancing said pattern means Icontinuously during formation of a pattern in fabric being knitted, and means for setting said pattern drums into action in sequence.

l2. Mechanism as defined in claim l1 wherein said pattern means acts upon needles through levers displaced by said pattern means during its selecting function and, further, comprises cam means for displacing said levers.

13. Mechanism as defined in claim l2 wherein means is provided for moving said cam means to and 4from active relationship with said pattern means and in timed sequence thereto.

14. `ln a knitting machine having selecting means coinprising a pattern, pattern advancing and pattern sensing means, means to displace elements to be selected as governed by said pattern, which comprise pivoted levers and cam means to rock said levers, said cam means comprising two adjacent cams, means siidaoiy mount-ing said cams for movement to and from an active position and other means to move them to I1nd from those positions, one ae the other and at a time spaced interval.

l5. Mechanism as dened in claim 14 wherein said means to move said cams to prises a cylinder cam, star Wheel and star D16 BDS and from active position comwheel tripping Wiesinger Wiesinger Dec. 3, 1957 Nov. 25, 1958 

14. IN A KNITTING MACHINE HAVING SELECTING MEANS COMPRISING A PATTERN, PATTERN ADVANCING AND PATTERN SENSING MEANS, MEANS TO DISPLACE ELEMENTS TO BE SELECTED AS GOVERNED BY SAID PATTERN, WHICH COMPRISE PIVOTED LEVERS AND CAM MEANS TO ROCK SAID LEVERS, SAID CAM MEANS COMPRISING TWO ADJACENT CAMS, MEANS SLIDABLY MOUNTING SAID CAMS FOR MOVEMENT TO AND FROM AN ACTIVE POSITION AND OTHER 